html,body{
  margin: 0;
  padding: 0;
  font-size: 16px;
  color: #3c3d3d;
  font-family: "微软雅黑",Microsoft YaHei;
}
ul,li{
  margin: 0;
  padding: 0;
  list-style: none;
}
p,h1,h2,h3,h4,h5,h6{
  margin: 0;
  padding: 0;
}
a{
  text-decoration: none;
  cursor: pointer;
  color: #3c3d3d;
}
.overhidden{
  overflow: hidden;
}
.left{
  float: left;
}
.right {
  float: right;
}
.textCenter{
  text-align: center;
}
.positionR{
  position: relative;
}
positionA{
  position: absolute;
}
